Add code linting workflow (#2)

* Add code linting workflow

* Add wearerequired/coding-standards as dep

Author: ocean90

.github/workflows/linting.yml

@@ -0,0 +1,41 @@
+name: Linting
+
+on:
+  pull_request:
+
+jobs:
+  linters:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out Git repository
+        uses: actions/checkout@v2
+
+      - name: Set up PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: "7.4"
+          coverage: none
+          tools: composer
+
+      - name: Get Composer Cache Directory
+        id: composer-cache
+        run: |
+          echo "::set-output name=dir::$(composer config cache-files-dir)"
+      - uses: actions/cache@v2
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.json') }}
+          restore-keys: |
+            ${{ runner.os }}-composer-
+
+      - name: Install PHP dependencies
+        run: |
+          composer i
+          echo "::add-path::vendor/bin"
+
+      - name: Run linters
+        uses: wearerequired/lint-action@v1
+        with:
+          github_token: ${{ secrets.github_token }}
+          php_codesniffer: true

composer.json

@@ -22,7 +22,9 @@
   ],
   "require": {
     "php": ">=7.1",
-    "composer-plugin-api": "^1.0 || ^2.0"
+    "composer-plugin-api": "^1.0 || ^2.0",
+    "dealerdirect/phpcodesniffer-composer-installer": "^0.7.0",
+    "wearerequired/coding-standards": "^1.5"
   },
   "require-dev": {
     "composer/composer": "1.6.* || 2.0.*@dev",
@@ -38,5 +40,11 @@
     "psr-4": {
       "Required\\Deployer\\": "src"
     }
+  },
+  "minimum-stability": "dev",
+  "prefer-stable": true,
+  "scripts": {
+    "format": "vendor/bin/phpcbf --report-summary --report-source .",
+    "lint": "vendor/bin/phpcs --report-summary --report-source ."
   }
 }